Australian Standard Contracts
AS 4000:2025 - The Modernised Edition
AS 4000:2025 is the modernised edition of Australia most widely used construct-only contract. Advice on what changed from AS 4000-1997, and which edition suits your project.
AS 4000:2025 is the updated edition of AS 4000, the construct-only General Conditions of Contract, published by Standards Australia to modernise the long-standing AS 4000-1997. It keeps the core structure and familiar clause numbering that made AS 4000 one of the most widely used contracts in Australian construction, while refreshing the drafting to reflect current legislation and industry practice.
The most significant change is to dispute resolution. Where AS 4000-1997 defaulted to a conference followed by arbitration, the 2025 edition introduces a more flexible regime: the parties can tailor the dispute resolution pathway, negotiation comes first, and the default final step is litigation, with arbitration available where the parties agree. The update also tidies a number of mechanisms to align with modern practice.
For a project team, the practical question is which edition applies and whether the change in dispute resolution, and the other updates, suit the project. That choice, and the special conditions attached to whichever edition is used, is where advice is worthwhile before the contract is signed.
Where Christopher can help with AS 4000:2025
The 2025 edition changes how disputes are resolved and refreshes several clauses, so the edition you adopt matters. Christopher can help you decide which edition to use and get the terms right. Here is where he can assist.
Which edition to use
Advice on whether to adopt AS 4000:2025 or stay with AS 4000-1997 for a given project, and what the differences mean for your risk, your programme and your dispute pathway.
The new dispute resolution regime
Advice on the more flexible clause 42 dispute resolution options in the 2025 edition, including the choice between arbitration and litigation and how to tailor the pathway to suit the project.
Special conditions for the 2025 edition
Drafting and reviewing special conditions against the updated clauses, so amendments written for the 1997 edition are not carried across without checking they still work.
Contract review before signing
A review that confirms which edition applies, checks the amendments, and identifies where risk sits for the party you act for under the updated form.
Key features of AS 4000:2025
Modernised, but familiar
The 2025 edition keeps the AS 4000 structure and clause numbering, so it remains recognisable to anyone who knows the 1997 form, while updating the drafting.
Flexible dispute resolution
Clause 42 is reworked so the parties can tailor the dispute resolution pathway, with negotiation first and litigation as the default final step rather than arbitration.
Still construct only
Like the 1997 edition, AS 4000:2025 is a construct-only contract administered by a Superintendent who must act reasonably and in good faith.
Edition matters
Because both editions are in circulation, a contract should be clear about which one it adopts, and special conditions should be checked against the edition actually used.
When AS 4000:2025 is used
- New construct-only projects adopting the current edition
- Parties wanting a modern dispute resolution regime with a choice of forum
- Projects updating their standard documents from AS 4000-1997
- Head contracts intended to sit above a construct-only subcontract
Get advice on your AS 4000:2025 contract
Choosing between AS 4000-1997 and AS 4000:2025, or updating your standard documents to the new edition, is worth a conversation before you commit. Christopher can advise on which edition to use, the new dispute resolution options, and the special conditions that go with it.
Common questions about AS 4000:2025
What is AS 4000:2025?
AS 4000:2025 is the modernised edition of AS 4000, the construct-only General Conditions of Contract published by Standards Australia. It updates the long-standing AS 4000-1997, keeping the same core structure and clause numbering while refreshing the drafting to reflect current legislation and practice. Its headline change is a more flexible dispute resolution regime.
What changed between AS 4000-1997 and AS 4000:2025?
The most significant change is dispute resolution. AS 4000-1997 defaulted to a conference followed by arbitration, whereas AS 4000:2025 lets the parties tailor the pathway, puts negotiation first, and defaults to litigation as the final step, with arbitration available where the parties agree. The 2025 edition also updates a number of other mechanisms to align with modern practice, while keeping the familiar AS 4000 structure.
Should I use AS 4000:2025 or AS 4000-1997?
Both editions are in use, so the right choice depends on the project and, in particular, on how you want disputes to be resolved. The 2025 edition offers a more flexible dispute resolution regime and updated drafting; the 1997 edition is the version most existing documents and amendments are built around. It is worth confirming which edition your contract adopts and whether any special conditions were written for the other one.
Do special conditions written for AS 4000-1997 still work with the 2025 edition?
Not automatically. Special conditions drafted against the 1997 clauses can refer to clause numbers or mechanisms that have changed in the 2025 edition, particularly in dispute resolution. If you are moving to AS 4000:2025, existing amendments should be reviewed against the updated form rather than carried across unchecked.
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